Bur-wheel support for knitting-machines.



A. SHAVER. BUR WHEEL SUPPORT FUR KNITTING MACHINES.

(Application led Apr.

(No Model.)

P w .H l

llNiTnn dTaTns PaTnNT Ottieni ALFRED SHAVER, OF TROY, NEXV YORK.

BURHWHEEL SUPPORT FOR KNITTINGnN/CHINES.

SPECIFKCATION forming part of Letters patent No. 680,945, dated August 20, 190

Application iiled April 4, 1901. Serial No. 54,239. (No model.)

To all 1071/0772, t may concern:

Be it known that I, ALFRED SHAVER, a citizen of the United States, residing at Troy, county of Rensselaer', and State of New York, have invented certain new and useful lmprovements in Bur-Thcel Supports for Knitting-Machines, of which the following is a specification.

The invention relates to suchimprovements; and it consists of the novel construction and combination of parts hereinafter described and subsequently claimed.

Reference may be had to the accompanying drawi n and the re ference eharacte rs marked thereon, which form a part of this specification.

Similar characters referto similar parts in the several figures.

Figure 1 of the drawings is a view in side elevation of my improved bur-wheel support for knitting-machines. Fig. 2 is a central vertical longitudinal section of the same. Fig. 3 is a cross-section of the same, taken on the broken line 3 3 in Fig. 1.

The object of my invention is to provide for a more accurate adjustment and greater stability of the supports for bur-Wheels of knitting-machines.

Referring to the drawings, 1 represents the ordinary upright stand erected from the bed of the machine, (not shown,) and provided at its upper end with the barrel-bracket com prising the base 2, bolted to the upper end of the stand, and the integral outwardly-projecting barrel 3.

The bur-Wheel 4C, of which only the hub is shown, the blades being omitted and indicated by dotted lines, is rotatively mounted upon the spindle 5, projecting from the bracket 6, fixed upon the inner end of a supportingshaft 7, rotatively mounted in the bearings in the barrel-bracket on the upper end of the stand and adapted to reciprocate longitudinally therein. This shaft passes loosely through the end cap 9 of the barrel, which forms a bearing-support therefor. A coilspring 10 incloses said shaft within the barrel and is adapted to bear at one end upon the sleeve 12, fixed upon said shaft Within the barrel, and at its other end upon the end cap 9 or interposed mechanism. This spring serves to yieldingly force said shaft inwardly to the limit permitted by the stop-nuts 13, which fit the outerscreW-threaded portion 14fof said shaft and are adapted to engage the boss 15 on the end cap of the barrel, and thereby limit the inward movement of the shaft. By varying the position of these stop-nuts 13 a denite location of the bur-Wheel supported upon the inner end of said shaft can be aocurately determined in use in the usual manner. An important feature of my invention consists in the means employed to prevent a rotative movement of said shaft in its bearings While in use. For this purpose I provide a frame S, adapted to embrace and turn upon the inner portion of the barrel, said frame being thereby pivotally supportedconcentrically with said shaft. A screw 16, inserted through the concentric slot 17 in said frame into the base of the barrel-bracket, serves as a means for detaohably locking the frame in different positions of rotative adjustment. This frame is provided With an outwardlyprojecting stud or post 18, upon Which is mounted a sleeve 19, free to slide longitudinally thereupon. This sleeve is rigidly connected With the sleeve 12 on the shaft 7 by means of the rigid arm 20, projecting from the sleeve 12 through an aperture 21 in the barrel-wall and inserted in a socket in the sleeve 19 and secured therein by the set-screw 22. The sleeve 12 is locked upon the shaft 7 by means of the set-screw 23. It will thus be apparent that the shaft 7, sleeve 12, arm 20, and sleeve 19 are all rigidly connected to the frame 8 so far as rotative movement is concerned, and that after said frame 8 is secured in xed relation to the bracket-base 2 and stand 1, as by the set-screw 1G, rotative movement of the shaft 7 Will be Wholly prevented. The usual longitudinal reciprocating movements of said shaft in its bearings Will, however, be permitted, the sleeve 19 being free to slide longitudinally of the post or stud 1S.

The construction shown While serving as an eifective means for looking the shaft 7 against rotative movement serves also as a means for securing accurate rotative adjustment of said shaft to secure the proper presentation of the blades of the bur-Wheel to the knitting-machine needles. (Not shown.) This adjustment is accomplished by loosening the set-screw 1G and swinging the frame IOO 8 in one direction or the other until the desired position of the bur-wheel has been secured, whereupon the yframe is locked in position by tightening the set-screw 16. To permit this movement of adjustment, the slot 2l in the barrel is widened to permit the necessary lateral movement of the arm 20. As a means for varying the tension of the spring 10, I have shown an annular Washer 24 inclosing the shaft 7 within the barrel in position to engage the outer end of said spring, and a plurality of slide-rods 25 inserted through apertures in the end cap 9 of the barrel, with theirinner ends in engagement with the adjacent nut 26, fitting the screw-threaded exterior of the boss 15 on said end cap. By means of the screw adjustment of this nut upon the boss the position of the Washer 24: can be varied within the barrel to vary the force of said spring as desired.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a bur-wheel support, the combination with the upright stand provided with bearings; of the bnr-Wheel-spndle supporting shaft supported in said bearings; astud projecting laterally from, and supported in fixed relation to said stand; and a connection between said stud and shaft whereby rotary movement of said shaft is prevented.

2. In a bur-wheel support, the combination with the upright stand; of a bnr-wheel-spindie-supporting shaft reciprocator;7 longitudinally in bearings on said stand; a stud parallel with said shaft supported in fixed relation to said stand; a sleeve fitting and capable of reciprocating movements upon said stud; and a connection between said sleeve and shaft, whereby saidsleeve accompanies said shaft in its reciprocating movements and prevents rotary movement of the shaft.

3. In abur-wheel support, the combination with the upright stand; of a bur-wheel-spindle-supporting shaft mounted in bearings'on said stand; a stud-supporting frame rotatively mounted upon said stand concentric with said shaft; a stud projecting from said frame; means for securing said frame in adjusted positions upon said stand, and a connection between said shaft and stud whereby said shaft is caused to partake of the rotative movements of said frame, and rotative movement of the shaft independently of said frame is prevented, substantially as described.

4. In a bur-wheel support, the combination with the upright stand; the bur-wheel-spindie-supporting shaft reciprocatory in bearings on said stand; the shaft-inclosing barrel, and end cap for said barrel apertured to receive said shaft;l of a shaft controlling spring located within said barrel with one end bearing upon an offset on said shaft; a washer located within said barrel in engagement with the other end of said spring; and screw-operated adjusting mechanism connecting with said washer through apertures in said end cap for varying the force of said spring, substantially as described.

In testimony whereof I have hereunto set my hand this 21st day of March, 1901.

ALFRED SI-IAVER.

Witnesses:

FRANK C. CURTIS, E. M. OREILLY. 

